Provider records sourced from NPPES (CMS National Plan & Provider Enumeration System). Data current as of August 10, 2026.
NPIDirectory

Dr. Diana Nguyen, OD

Individual provider Optometrist · NPI 1659955201

Dr. Diana Nguyen, OD is an Optometry in Livermore, California. Graduated from Southern California College of Optometry in 2019, 7 years ago. Licensed in California.

Years since qualifying
7
Trained at
Southern California College of Optometry
Licensed in
CA
In the registry since
2021
What do these letters mean?
OD — Doctor of Optometry
An optometrist: examines eyes, prescribes glasses and contacts, and treats many eye conditions.

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Practice location Address checks out

4423 First St
Livermore, CA 94551-4915
Phone: (925) 292-0025
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Optometrist (primary) Taxonomy 152W00000X · Licence 34790 (CA)

Record details

NPI number1659955201
Entity typeIndividual (Type 1)
GenderFemale
Credentials OD
Sole proprietorNo
NPI enumeratedMay 10, 2021
Last updated in NPPESMay 10, 2021
Certification dateMay 10, 2021

Medicare enrollment

From the CMS Doctors & Clinicians file — this clinician is enrolled in Medicare.

Medicare specialtyOPTOMETRY
Medical schoolSOUTHERN CALIFORNIA COLLEGE OF OPTOMETRY
Graduated 2019 (7 years in practice)
Accepts Medicare assignment Not indicated
Practice locations2 on file with Medicare

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